I dunno.... I did research and comparisons... not THAT much...
just 8 mhz faster and 16 pipelines... and it demands more wattage. More ram of course, but still. For $100 less, don't you think the x800 would suffice?
well....the memory on the XL runs 280 mhz faster than the x800. And plus, 4 pipe lines is a lot. It like the 6800nu to the 6800GT fast clock speeds and more pipelines in the GT.